a pre-algebra class containing 31 students, there are 18 freshmen, 10 sophomores, and 3 juniors.  what fraction of the class is sophomores?
your answer must be in simplest form.

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)

Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?